Merge pull request #159 from bellesea/main

fractalTree-maggieClaireBelle
hackclub · Nov 18, 2023 · c495832 · c495832 · vercel · Nov 18, 2023
2 parents 5e9b928 + ebf93ae
commit c495832
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diff --git a/art/fractalTree-maggieClaireBelle/index.js b/art/fractalTree-maggieClaireBelle/index.js
@@ -0,0 +1,33 @@
+// Fractal trees by Maggie, Claire and Belle
+
+const t = createTurtle();
+
+const MAX_ITERATION = randInRange(7, 10)
+const START_ANGLE = 90
+const ANGLE_CHANGE = randInRange(10, 20)
+const BRANCH_LEN = randInRange(20, 30)
+const START_POS = [62.5, 30]
+
+function recurse(prevBranchEnd, angle, branchLen, iteration) {
+  if (iteration > MAX_ITERATION) {
+    return
+  }
+
+  // Left branch from a node
+  t.jump(prevBranchEnd)
+  t.setAngle(angle + ANGLE_CHANGE)
+  t.forward(branchLen)
+
+  recurse(t.end, angle + ANGLE_CHANGE, branchLen * 2/3, iteration + 1)
+
+  // Right branch from a node
+  t.jump(prevBranchEnd)
+  t.setAngle(angle - ANGLE_CHANGE)
+  t.forward(branchLen)
+
+  recurse(t.end, angle - ANGLE_CHANGE, branchLen * 2/3, iteration + 1)
+}
+
+recurse(START_POS, START_ANGLE, BRANCH_LEN, 1)
+
+drawTurtles([t])
diff --git a/art/fractalTree-maggieClaireBelle/snapshots/0.png b/art/fractalTree-maggieClaireBelle/snapshots/0.png
diff --git a/art/fractalTree-maggieClaireBelle/snapshots/1.png b/art/fractalTree-maggieClaireBelle/snapshots/1.png
diff --git a/art/fractalTree-maggieClaireBelle/snapshots/2.png b/art/fractalTree-maggieClaireBelle/snapshots/2.png